CN101118983B - Antenna device - Google Patents
Antenna device Download PDFInfo
- Publication number
- CN101118983B CN101118983B CN2007101382431A CN200710138243A CN101118983B CN 101118983 B CN101118983 B CN 101118983B CN 2007101382431 A CN2007101382431 A CN 2007101382431A CN 200710138243 A CN200710138243 A CN 200710138243A CN 101118983 B CN101118983 B CN 101118983B
- Authority
- CN
- China
- Prior art keywords
- antenna
- terminal
- antenna device
- case
- opening
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 238000007789 sealing Methods 0.000 claims abstract description 4
- 239000002184 metal Substances 0.000 claims description 12
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 239000003990 capacitor Substances 0.000 description 8
- 239000000463 material Substances 0.000 description 6
- 238000005476 soldering Methods 0.000 description 6
- 238000004804 winding Methods 0.000 description 4
- 229920001707 polybutylene terephthalate Polymers 0.000 description 3
- 210000000078 claw Anatomy 0.000 description 2
- 229920001971 elastomer Polymers 0.000 description 2
- 239000000945 filler Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 239000005060 rubber Substances 0.000 description 2
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 description 1
- 229920000106 Liquid crystal polymer Polymers 0.000 description 1
- 239000004977 Liquid-crystal polymers (LCPs) Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 238000005530 etching Methods 0.000 description 1
- 239000000696 magnetic material Substances 0.000 description 1
- 239000012811 non-conductive material Substances 0.000 description 1
- -1 polybutylene terephthalate Polymers 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 229920002050 silicone resin Polymers 0.000 description 1
- 229920003051 synthetic elastomer Polymers 0.000 description 1
- 239000005061 synthetic rubber Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
- 229910000859 α-Fe Inorganic materials 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q7/00—Loop antennas with a substantially uniform current distribution around the loop and having a directional radiation pattern in a plane perpendicular to the plane of the loop
- H01Q7/06—Loop antennas with a substantially uniform current distribution around the loop and having a directional radiation pattern in a plane perpendicular to the plane of the loop with core of ferromagnetic material
- H01Q7/08—Ferrite rod or like elongated core
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/27—Adaptation for use in or on movable bodies
- H01Q1/32—Adaptation for use in or on road or rail vehicles
- H01Q1/3208—Adaptation for use in or on road or rail vehicles characterised by the application wherein the antenna is used
- H01Q1/3233—Adaptation for use in or on road or rail vehicles characterised by the application wherein the antenna is used particular used as part of a sensor or in a security system, e.g. for automotive radar, navigation systems
- H01Q1/3241—Adaptation for use in or on road or rail vehicles characterised by the application wherein the antenna is used particular used as part of a sensor or in a security system, e.g. for automotive radar, navigation systems particular used in keyless entry systems
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/42—Housings not intimately mechanically associated with radiating elements, e.g. radome
Landscapes
- Engineering & Computer Science (AREA)
- Computer Security & Cryptography (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Details Of Aerials (AREA)
- Support Of Aerials (AREA)
- Lock And Its Accessories (AREA)
Abstract
The present invention provides an antenna device that is easy to manufacture by doing away with the wiring section. The antenna device includes an antenna member housed inside a nearly tubular case and a terminal body electrically connected to the antenna member for taking out electrical signal to outside, and the antenna member is sealed inside the case. The antenna device also has a housing for sealing the antenna member inside the case for engaging with a connector to be coupled, and a plugging member having an O-ring and a terminal stage fit into a nearly integral unit.
Description
Technical Field
The present invention relates to an antenna device used in a remote control device for communicating with a portable device and remotely controlling locking and unlocking of a door or the like.
Background
In recent years, remote control devices that perform communication between an antenna device and a portable device mounted on a vehicle and remotely control locking and unlocking of a door and the like have become widespread.
A conventional antenna device used for such a remote control device will be described with reference to fig. 5.
Fig. 5 is a sectional view of a conventional antenna device. In fig. 5, a case 101 made of a non-conductive material is formed in a substantially box shape, and has an opening 101A on the upper surface thereof, and a lead terminal 102A and a lead terminal 102B led to the outside are fitted to the left surface, and the lead terminal 102A and the lead terminal 102B are integrally molded.
The antenna body 103 is composed of a core 103A, a coil 103B, and a capacitor 103C. The coil 103B wound around the outer periphery of the core 103A has a winding start end connected to the lead terminal 102A and a winding end connected to one end of the capacitor 103C. The other end of the capacitor 103C is connected to the lead terminal 102B. An antenna body 103 is housed inside the case 101.
Further, a connector (not shown) provided on the rear side of the lead 105 and a connector to be connected from an in-vehicle device (not shown) mounted on the vehicle are connected by relay. For convenience of explanation, the right side of fig. 5, i.e., the side of the antenna body 103, is referred to as a main body portion 110A, and the left side, i.e., the side of the lead 105, is referred to as a wiring portion 110B.
The antenna body 103 is fixed in the case 101 by filling a filler 106 such as silicone resin or epoxy resin so as to seal the antenna body 103 in the case 101 and then curing the filled filler at a predetermined temperature.
The locking hole 104A provided in the side surface of the cover 104 having an opening on the lower surface is locked to the claw portion 101B of the case 101, and the opening 101A of the case 101 is closed by the cover 104, thereby forming the antenna device 110.
In the above configuration, the main body portion 110A of the antenna device 110 is disposed in a door handle of a door or the like. The wiring unit 110B led out from the door handle is wired in a space formed by the door outer shell and the interior rubber, and the rear side of the wiring unit 110B is connected to the in-vehicle device.
A portable device (not shown) carried by the user communicates with the antenna device 110 by radio signals, and the in-vehicle device remotely controls the locking and unlocking of the door by interpreting a received signal from the antenna device 110.
Further, as prior art literature information relating to the invention of this application, for example, japanese patent application laid-open No. 2001-345615 is known.
However, in the conventional antenna device 110, the length of the lead 105 of the wiring portion 110B needs to be changed in accordance with the type of the vehicle and the arrangement position of the antenna device 110. Therefore, there are problems in that the number of components is large, the manufacturing is complicated, and the types of the antenna devices 110 are increased.
Disclosure of Invention
An antenna device of the present invention includes: a cylindrical case having an opening on one side; an antenna body accommodated in the case; a terminal body electrically connected to the antenna body and extending to the outside; and a sealing body which is provided with a terminal body and seals the opening of the box body when the antenna body is sealed in the box body; wherein the closing body is integrally provided with a cover which is fitted with the connector to be connected.
Drawings
Fig. 1 is a cross-sectional view of an antenna device according to an embodiment of the present invention;
fig. 2A is an exploded perspective view of an antenna device according to an embodiment of the present invention;
fig. 2B is a diagram showing an antenna device according to an embodiment of the present invention as an equivalent circuit;
fig. 3 is a main part enlarged plan view of an antenna device according to an embodiment of the present invention;
fig. 4A is a main part enlarged sectional view of an antenna device according to an embodiment of the present invention;
fig. 4B is a main part enlarged sectional view of the antenna device according to the embodiment of the present invention;
fig. 4C is an enlarged sectional view of a main part of the antenna device according to the embodiment of the present invention;
fig. 4D is a main part enlarged sectional view of an antenna device according to an embodiment of the present invention;
fig. 5 is a cross-sectional view of a conventional antenna device.
Detailed Description
The present invention provides an antenna device which can solve the above-mentioned conventional problems, does not need a wiring part, and can be easily manufactured.
Hereinafter, an embodiment of the present invention will be described with reference to fig. 1 to 4D.
Fig. 1 is a cross-sectional view of an antenna device according to an embodiment of the present invention, fig. 2A is an exploded perspective view of the antenna device, and fig. 2B is a schematic view of the antenna device shown by an equivalent circuit. In these figures, the substantially cylindrical case 11 is formed using a material having excellent heat resistance and mechanical strength such as polybutylene terephthalate (PBT), and has an opening 11A on the left side surface thereof.
The main structure of the antenna device 13 includes: a rod-shaped core 13A made of a magnetic material such as ferrite, a coil 13B wound around the outer periphery thereof, and a capacitor 13C connected in series with the coil 13B.
Core 13D, which is the entire of core 13A and coil 13B, is press-fitted into opening 14A provided in terminal block 14. Terminal block 14 is made of a resin such as a liquid crystal polymer having excellent heat resistance, and terminal body 12 is insert-molded at one end thereof.
This press-fitting is accomplished by providing a plurality of rib-like projections (not shown) in the opening direction on the inner walls of opening 14A and outer wall 14C of terminal tray 14, and pressing the projections into the magnetic core portion 13D while crushing the projections.
As shown in fig. 2A and 2B, the initial winding end of the coil 13B is connected to the internal terminal 12A of the terminal body 12 by soldering or the like, and the final winding end thereof is connected to the internal terminal 12C by soldering or the like. In this way, one end of the capacitor 13C is connected to the electrode D1 extending from the internal terminal 12C by soldering or the like, and the other end of the capacitor 13C is connected to the electrode D2 extending from the internal terminal 12B by soldering or the like. As an equivalent circuit of these portions, a circuit in which a coil 13B and a capacitor 13C are connected in series as shown in fig. 2B is used.
Further, the internal terminal 12A and the internal terminal 12B are extended to form a lead terminal 22A and a lead terminal 22B for externally leading out an electric signal of the antenna body 13. Thus, the terminal body 12 is formed by integrally providing these components.
As shown in fig. 1, terminal plate 14 is provided with flange portion 14B having a stepped shape toward the outside. An O-ring 15 is disposed on the step portion, and a claw portion 16A of an outer cover 16 is locked in a locking hole 11B of the case 11. Thus, the O-ring 15 is clamped together with the cover 16.
As the material of the cover 16, a material having excellent heat resistance and mechanical strength, such as PBT, similar to the case 11, can be used. The O-ring 15 is preferably made of a resin material having excellent elasticity and made of a rubber material such as synthetic rubber, urethane, or silicone.
The cover 16, the O-ring 15, and the terminal tray 14 are integrally fitted to form a closure 19.
The entire accommodated body 18 of the closing body 19 and the antenna body 13 is accommodated in the case 11 through the opening 11A. At this time, in each portion, first, magnetic core 13A accommodating the tip abuts bottom surface 11C of case 11. The closing body 19 is inserted and locked with the contact surface or point as a fulcrum, whereby the closing body 19 closes the opening 11A of the case 11.
As a result, the antenna device 20 is compressed by the O-ring 15, and water can be prevented from entering the case 11 from the outside.
Next, the terminal body 12 will be described in further detail with reference to fig. 3.
First, the terminal body 12 is formed by integrally providing the internal terminals 12A, 12B, 12C and the lead terminals 22A, 22B. The terminal body 12 is formed by forming a narrow band material, for example, a thin metal plate having a thickness of about 0.3mm into a predetermined shape by press working and etching.
Next, the lead terminals 22A and 22B are formed by folding the thin metal plate in two layers to secure a predetermined thickness, for example, about 0.6 mm. Lead terminals 22A and 22B are connected to a connector to be connected.
After the terminal body 12 is integrally molded with the terminal tray 14, the terminal body is cut at the cut portions C1 to C4 shown in fig. 3 and separated from the narrow strip, and the bent portions a1 and a2 of the internal terminals 12A and 12C are bent, respectively. The electrodes D1 and D2 are integrally formed by extending the internal terminals 12C and 12B.
As shown in fig. 4A, plug portions 22A and 22B connected to the connector to be connected are formed by folding the sheet metal plate in two layers to secure a predetermined thickness t. As shown in fig. 4B, the sheet metal plate may be formed by folding two layers from the left and right at a position approximately 1/4 of the width of the sheet metal plate to secure a predetermined thickness t. As shown in fig. 4C, plug portions 22A and 22B may be formed so that a projection is provided at the center of the thin metal plate to secure a predetermined thickness t.
As shown in fig. 4D, plug portions 22A and 22B may be formed by further reducing the thickness of the thin metal plate, for example, by folding three layers of thin metal plates having a thickness of about 0.2mm to secure a predetermined thickness t.
By doing so, plug portions 22A and 22B can secure a thickness t necessary for connection with the connector to be connected even if a thin metal plate is used. At the same time, since the elastic property is maintained in the thickness direction when the connector is connected to the connector to be connected, the connection reliability can be improved.
Since the internal terminals 12A, 12B, 12C and the electrodes D1, D2 of the terminal body 12 can be formed by the thickness of a thin metal plate, the heat capacity of soldering can be reduced when the coil 13B and the capacitor 13C are connected to the internal terminals 12A, 12B, 12C and the electrodes D1, D2 by soldering or the like.
Further, since the internal terminals and the electrodes of the terminal body 12 can be formed with a thin plate thickness, the weight can be reduced and the processing can be easily performed.
In the above configuration, the antenna device 20 is disposed in the door handle of the door, and the connector to be connected from the in-vehicle device (not shown) is connected to the cover 16.
The antenna device 20 communicates with a portable device (not shown) carried by the user by radio signals, and the in-vehicle device interprets the received signal from the antenna device 20 to remotely operate the locking and unlocking of the door.
According to this embodiment, the cover 16 for fitting the connector to be connected is integrally provided in the closing body 19 for closing the opening 11A of the housing 11, and the wiring portion 110B necessary for the conventional antenna device can be eliminated. At the same time, even if the types of vehicles differ and the antenna devices are disposed at different positions, the antenna devices 20 that can be handled by one type can be obtained.
The terminal body 12 is a terminal body integrally provided with plug portions 22A and 22B connected to a connector to be connected, and internal terminals and electrodes electrically connected to the antenna body 13. Therefore, the number of parts can be reduced as compared with the case where the parts are separately mounted.
The antenna device of the present invention has the effect that it does not require a wiring section necessary for a conventional antenna device and can be easily manufactured, and is useful for an antenna device or the like for a remote control device for remotely controlling the closing and opening of a door or the like.
Claims (3)
1. An antenna device is provided with:
a cylindrical case having an opening on one side;
an antenna body accommodated in the case;
a terminal body electrically connected to the antenna body and extending to the outside; and
a sealing body which is provided with the terminal body and seals the opening of the case while sealing the antenna body in the case; wherein,
the closing body is formed integrally by fitting a cover, an O-ring and a terminal plate,
the whole of the magnetic core and the coil of the antenna body is pressed and embedded on an opening part arranged on the terminal plate,
the terminal plate is provided with a jaw part which is step-shaped towards the outside,
an O-ring is arranged on the step part of the flange part,
the terminal body and the terminal plate are integrally formed.
2. The antenna device according to claim 1, wherein the terminal body is integrally provided with a plug portion connected to a connector to be connected and an electrode electrically connected to the antenna body, and the plug portion is formed by processing a thin metal plate into a predetermined shape.
3. The antenna device according to claim 2, wherein the plug portion of the terminal body is formed to a predetermined thickness by folding a thin metal plate.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2006209663A JP4862540B2 (en) | 2006-08-01 | 2006-08-01 | Antenna device |
| JP2006-209663 | 2006-08-01 | ||
| JP2006209663 | 2006-08-01 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101118983A CN101118983A (en) | 2008-02-06 |
| CN101118983B true CN101118983B (en) | 2012-05-09 |
Family
ID=39028622
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2007101382431A Expired - Fee Related CN101118983B (en) | 2006-08-01 | 2007-07-31 | Antenna device |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US7773046B2 (en) |
| JP (1) | JP4862540B2 (en) |
| CN (1) | CN101118983B (en) |
Families Citing this family (25)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009154748A2 (en) * | 2008-06-17 | 2009-12-23 | Rosemount Inc. | Rf adapter for field device with low voltage intrinsic safety clamping |
| JP5098793B2 (en) * | 2008-05-13 | 2012-12-12 | スミダコーポレーション株式会社 | Antenna device |
| US8694060B2 (en) | 2008-06-17 | 2014-04-08 | Rosemount Inc. | Form factor and electromagnetic interference protection for process device wireless adapters |
| JP5255698B2 (en) * | 2008-06-17 | 2013-08-07 | ローズマウント インコーポレイテッド | Wireless adapter for field devices with variable voltage drop |
| US8929948B2 (en) | 2008-06-17 | 2015-01-06 | Rosemount Inc. | Wireless communication adapter for field devices |
| US8626087B2 (en) * | 2009-06-16 | 2014-01-07 | Rosemount Inc. | Wire harness for field devices used in a hazardous locations |
| US9674976B2 (en) * | 2009-06-16 | 2017-06-06 | Rosemount Inc. | Wireless process communication adapter with improved encapsulation |
| CN102035062B (en) * | 2009-09-30 | 2014-02-26 | 莱尔德技术股份有限公司 | Antenna assembly and manufacturing method thereof |
| JP2011120129A (en) * | 2009-12-07 | 2011-06-16 | Panasonic Corp | Antenna and antenna device using the same |
| JP5691019B2 (en) * | 2010-03-02 | 2015-04-01 | パナソニックＩｐマネジメント株式会社 | Antenna device |
| US10761524B2 (en) | 2010-08-12 | 2020-09-01 | Rosemount Inc. | Wireless adapter with process diagnostics |
| JP5729069B2 (en) * | 2011-03-24 | 2015-06-03 | アイシン精機株式会社 | In-vehicle antenna device |
| US9310794B2 (en) | 2011-10-27 | 2016-04-12 | Rosemount Inc. | Power supply for industrial process field device |
| JP5549725B2 (en) * | 2012-11-12 | 2014-07-16 | スミダコーポレーション株式会社 | Antenna device |
| JP6229305B2 (en) * | 2013-05-17 | 2017-11-15 | スミダコーポレーション株式会社 | ANTENNA DEVICE AND ANTENNA DEVICE MANUFACTURING METHOD |
| JP6186907B2 (en) * | 2013-06-06 | 2017-08-30 | スミダコーポレーション株式会社 | Antenna coil device |
| US9768509B2 (en) | 2013-08-09 | 2017-09-19 | Sumida Corporation | Antenna coil component, antenna unit, and method of manufacturing the antenna coil component |
| JP6330271B2 (en) * | 2013-08-09 | 2018-05-30 | スミダコーポレーション株式会社 | Antenna coil component, antenna device, and method of manufacturing antenna coil component |
| JP6364906B2 (en) * | 2014-04-15 | 2018-08-01 | スミダコーポレーション株式会社 | ANTENNA DEVICE AND ANTENNA DEVICE MANUFACTURING METHOD |
| CN106500324B (en) * | 2015-09-07 | 2022-06-14 | 青岛海尔新能源电器有限公司 | Heat pump water heater outdoor unit and shell assembly thereof |
| JP6572720B2 (en) * | 2015-10-13 | 2019-09-11 | スミダコーポレーション株式会社 | ANTENNA DEVICE AND ANTENNA DEVICE MANUFACTURING METHOD |
| JP2017103549A (en) * | 2015-11-30 | 2017-06-08 | スミダコーポレーション株式会社 | Antenna device and method of manufacturing the same |
| JP6597431B2 (en) * | 2016-03-18 | 2019-10-30 | 株式会社リコー | Antenna device and communication device |
| DE102018222368B4 (en) * | 2018-12-19 | 2022-09-29 | SUMIDA Components & Modules GmbH | MOLDING TOOL FOR FORMING A ROD-SHAPED HOUSING FOR A ROD ANTENNA, METHOD FOR MAKING A ROD-SHAPED HOUSING AND ROD ANTENNA |
| CN111430922B (en) * | 2020-04-20 | 2022-09-13 | 胜美达电机（香港）有限公司 | Antenna device and method for manufacturing the same |
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| US3596273A (en) * | 1967-09-25 | 1971-07-27 | Richard J Francis | Multielement radio-frequency antenna structure having helically coiled conductive elements |
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| JPS6367903A (en) * | 1986-09-10 | 1988-03-26 | Aisin Seiki Co Ltd | Antenna system |
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| FI102927B1 (en) * | 1997-02-14 | 1999-03-15 | Nokia Mobile Phones Ltd | Communication unit, antenna and method for connecting the antenna |
| JP2001127522A (en) * | 1999-10-25 | 2001-05-11 | Nippon Antenna Co Ltd | Helical antenna |
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| JP2002232219A (en) * | 2001-01-31 | 2002-08-16 | Yokowo Co Ltd | On-vehicle antenna |
| JP2004127581A (en) * | 2002-09-30 | 2004-04-22 | Fujitsu Component Ltd | Electromagnetic relay |
| JP4196847B2 (en) * | 2004-02-12 | 2008-12-17 | 三菱マテリアル株式会社 | External antenna and communication equipment |
| CN1788386B (en) * | 2004-03-04 | 2011-01-05 | 松下电器产业株式会社 | Antenna device and communications system using it |
| JP4424151B2 (en) * | 2004-10-20 | 2010-03-03 | パナソニック株式会社 | Antenna device and communication system using the same |
| JP4715500B2 (en) * | 2005-12-21 | 2011-07-06 | パナソニック株式会社 | Antenna device |
-
2006
- 2006-08-01 JP JP2006209663A patent/JP4862540B2/en not_active Expired - Fee Related
-
2007
- 2007-07-26 US US11/878,690 patent/US7773046B2/en not_active Expired - Fee Related
- 2007-07-31 CN CN2007101382431A patent/CN101118983B/en not_active Expired - Fee Related
Non-Patent Citations (1)
| Title |
|---|
| JP平5-37217A 1993.02.12 |
Also Published As
| Publication number | Publication date |
|---|---|
| US7773046B2 (en) | 2010-08-10 |
| US20080030423A1 (en) | 2008-02-07 |
| JP2008042237A (en) | 2008-02-21 |
| JP4862540B2 (en) | 2012-01-25 |
| CN101118983A (en) | 2008-02-06 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120509 |